Work and Time Manager in WAS Community Edition

We were having our application deployed on Websphere Application Server ver 7.x and were using Work and Timer Manager for creating container managed threads and timer respectively.

Now we have to move our application to IBM WebSphere Application Server Community Edition 3.0. During deployment we are facing errors for Work and Time manager entries in our web.xml file. I tried to search on net how to configure these for WASCE but could not find one. I am not even sure that these exists for WASCE or not.

Please inform if there are any resources or you can guide me in correct direction.